Ejector.



P. J. O LEAR'Y. EJEOTOR.

APPLICATION FILED 11110.3. 1010.

1,005,288. I v I Patented 001;. 10, 19:11.

awue/wto'a 1 FRANK J. O LEARY Q vHMe aoeo I IRE er an anion;

FRANK J. OLEARY, F DETROIT, MICHIGAN, ASSIGNOR TO PENBERTHY INJECTORQOMPANY, OEE DEI'BOIT, MICHIGAN, A CORPORATION OF MICHIGAN.

EJ'ECTOR.

Speolfication of Letters Patent. Patented D017; Application filedDecember a, 19.10. swarm. 595,510.

"To all whom it mag concernl'.

- Be it known that I, FRANK J. OLEA'RY, a citizen of the United, Statesof America,

residing at Detroit, in the county of Wayne and State of Michigan, haveinvented certain new and useful Improvements in Ejectors, of which thefollowing is a specification, reference being accompanying drawings.

This invention relates to that class of ejectors which are intended tobe operated by fluid pressure to lift water or other liquids and thepresent improvement is in-.

tended to form an improvement on the common form of lifting ejectorswhereby it will operate \more efliciently and economically with waterpower of low pressure such as generally exists in the water supply ofcities and which is ordinarily not sufliciently high to obviate thenecessity of priming the e ector i or provide 'it with a hose extenslonon its discharge end to permit of self priming without using anexcessive amount of water.

With my improvement I overcome the difficulties and produce an ejectorbetter adapted for use as a substitute for a pump as n removing waterfrom excavations and as a household article for emptying bath orReferring to the drawing A is the hollow body integrally formed with asuction arm B and a discharge arm C, both of which may be suitablyscrewthreaded for pipe connection or be provided with corrugations toallow hose to slip over and be clamped thereto as better adapted forhousehold puroses. p E is the inlet nozzle for the motor fluid, it

is threaded into the body A and, may be' provided at its outer end withscrew threads to fit water taps or iron piping. For household use, ahose coupling member D is had therein to the.

sleeved thereon for connecting it readily to penstocks. The nozzle Etapers diminishingly from the intake to near the opposite end andextends beyond its greatest point of contraction with a graduallyenlarging bore. The nozzle E projects into the suction .chamber F formedby acylindrical enlarge ment of the body and communicates with thesuction arm B. The body is conically con tracted at the point where itsurrounds the discharge end of the nozzle and forms a tapering annularthroat G leading from the suction chamber into the discharge arm.

The discharge arm is 'provided with a bulbous enlargement Hcommunicating with the nozzle and with the suction chamber that of theoutlet end of the discharge arm and diametrically within the bulbous enlargement at right angles to the axis of the nozzle is located a bar'Jof triangular cross section and with the point of the triangle presentedtoward the nozzle.

In practice the motor fluid operatin the e ector has a straight pathprovided or it and the force of the stream in passing through the neckportion I will entrain air from the suction chamber and create a suctionfor lifting the water. If the discharge arm were unprovided with thebulbous enlargement containing the bar J, its capacity for lifting wouldwholly depend upon the volume and force of the stream passing throughthe discharge arm to fill up the same and prevent back flow of'airthrough the discharge arm into the suction chamber.

This is the reason why the common form of lifting ejector is ineflicientand uneconomical for many uses where it has to depend for its motivepower upon water of low pressure.- j I By providing the discharge armwith the bulbous enlargement and with the bar J, the stream in pressingthrough the bulbous enlargement is split in striking the bar and aportion of the stream is thrown against the 1nner wall of the ,bulbwithout materially decreasing its velocity and as a' consequence thespace in the bulb fills up and maintains a volume of water of evenpressure therein which seals the suction chamber. The device thus actsas a bafiie to prevent the back flow .of air from creeping into thesuction chamber and the capacity of the ejector for through a shortcylindrical neck portion I, the diameter of which is slightly largerthan thereby greatly increased.

' surrounded by the suction chamber, of a discharge arm at the end ofthe suction chamber in alinement with the nozzle, said armbeing-provided with a bulbous enlargement communicating with the suctionchamber and nozzle through a short cylindrical portion of the dischargearm and provided with a triangular bar extending diametrically withinthe bulb at right angles to the discharge arm andwith the apex of thebar opposite to the nozzle.

2. In a lifting ejector the combination with the cylindrical suctionchamber rovided with a laterally extending inlet arm and with thetapering inlet nozzle for the motive fluid concentrically surrounded bythe suction chamber, of a discharge 'arm at the end of the suctionchamber in alinement with the nozzle, said arm being provided with 'abulbous enlargement communicating with the suction chamber and nozzlethrough a short cylindrical portion of the discharge arm of largerinterior diameter than that of the portion beyond the enlargement, and atriangular bar in the enlargement placed diametricall across thereof andwith the apex of the ar opposite to the nozzle.

3. In a lifting ejector, the combination with the suction chamberprovided with a lateral inlet arm and tapering inlet nozzle for themotive fluid concentrically surrounded by the suction chamber, of adischarge arm at the end of the suction chamber in alinement with thenozzle, and provided with a bulbous enlargement communicating with thesuction chamber through a short cylindrical portion of the discharge armof larger interior diameter than that of the portion beyond theenlargement, and a bar extending diametrically wlthln the bulb at rightangles to the discharge arm.

In testimony whereof I afiix my signature inpresence of two witnesses.

. FRANK J. OLEARY.

Witnesses:

C. R. STUTNEY, A. M. SHANNON.

